Fixed broken getTimedModel method.

index.js

@@ -2,16 +2,11 @@ var Model = require('./lib/model.js');
 var geomagnetism = module.exports = {};
 
 var base_model;
-var models = {};
 
 geomagnetism.model = function(date) {
 	date = date || new Date();
-	var key = date.toDateString();
 	if (!base_model) {
 		base_model = new Model();
 	}
-	if (!models[key]) {
-		models[key] = base_model.getTimedModel(date);
-	}
-	return models[key];
+	return base_model.getTimedModel(date);
 };

lib/parsers/cof.js

@@ -4,7 +4,8 @@ module.exports = function(str){
 		main_field_coeff_h: [0],
 		secular_var_coeff_g: [0],
 		secular_var_coeff_h: [0],
-		n_max: 0
+		n_max: 0,
+		n_max_sec_var: 0
 	};
 	var lines = str.split(/\r?\n/);
 	for(var i = 0; i < lines.length; i++) {
@@ -31,6 +32,7 @@ module.exports = function(str){
 			}
 			if(n > result.n_max){
 				result.n_max = n;
+				result.n_max_sec_var = n;
 			}
 		}
 	}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "geomagnetism",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "description": "Computes geomagnetic field information",
   "main": "index.js",
   "scripts": {

test/model.test.js

@@ -4,13 +4,13 @@ var path = require('path');
 var fs = require('fs');
 
 var tolerances = {
-	incl: 1, //deg
-	decl: 2, //deg
-	x: 250, //nT
-	y: 250, //nT
-	z: 250, //nT
-	h: 250, //nT
-	f: 250 //nT
+	incl: 0.01, //deg
+	decl: 0.01, //deg
+	x: 5, //nT
+	y: 5, //nT
+	z: 5, //nT
+	h: 5, //nT
+	f: 5 //nT
 };
 
 function loadTestValues(){
@@ -67,5 +67,15 @@ describe("model", function(){
 				geomagnetism.model(new Date("1/1/1999"));
 			}, RangeError);
 		});
+		it("should get a different model for a different date", function(){
+			var pt = [44.53461, -109.05572];
+			var model0 = geomagnetism.model();
+			var model1 = geomagnetism.model(new Date("3/22/2018"));
+			var decl0 = model0.point(pt).decl;
+			var decl1 = model1.point(pt).decl;
+			assert.notEqual(model0, model1);
+			assert(Math.abs(decl1 - decl0) > 0.001, 'declination should be different');
+		});
+
 	});
 });

wmm.json

@@ -372,6 +372,7 @@
     0
   ],
   "n_max": 12,
+  "n_max_sec_var": 12,
   "epoch": 2015,
   "name": "WMM-2015",
   "start_date": "2014-12-15T07:00:00.000Z",